/*
 * Copyright 2007 Yusuke Yamamoto
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package twitter4j.http;

import twitter4j.conf.Configuration;

import java.lang.reflect.Constructor;

/**
 * @author Yusuke Yamamoto - yusuke at mac.com
 * @since Twitter4J 2.1.2
 */
public final class HttpClientFactory {

	public static HttpClient getInstance(final Configuration conf) {
		final String httpClientImplementation = conf.getHttpClientImplementation();
		if (httpClientImplementation != null) {
			try {
				final Class<?> clz = Class.forName(httpClientImplementation);
				final Constructor<?> constructor = clz.getConstructor(HttpClientConfiguration.class);
				return (HttpClient) constructor.newInstance(conf);
			} catch (final Exception e) {
				e.printStackTrace();
				// Falling back to default implementation.
				return new HttpClientImpl(conf);
			}
		}
		return new HttpClientImpl(conf);
	}
}
